Hyundai Motor Company

Kia Motors Corporation

Kil Bu Joo

Kie Youn Jeong

Dong Hyun Lee

Jung Wook Lee

Keun Young Kim

Won Jin Seo

Bong Hyun Park

Hong Mo Koo

Boo Youn An

Bong Hwan Park

Seung Soo Ryu

Jae Eun Chang

Dae Won Seo

Pan Ki Jung

Disclosed is a method for manufacturing a soundproofing board part having improved sound absorption performance. The soundproofing board part is manufactured by using, as a material, a recycled soundproofing material which contains a polyurethane foam having excellent sound absorption performance and impact resilience during the press molding; and by producing a sound absorption part on the back surface of the soundproofing board part through a remolding processing method. Also disclosed is a soundproofing board part manufactured by the method. Accordingly, sound absorption performance of the soundproofing board part is improved by about 20% or greater, manufacturing cost thereof may be reduced by recycled resources utilizing waste sheets, and manufacturing process may be simplified compared the related art.

Method for manufacturing soundproofing board part having excellent sound absorption performance and soundproofing board part manufactured by the same

The present invention provides a multilayer dash isolation pad having superior formability and sound absorption performance. The multilayer dash isolation pad includes a decoupler and a sound absorption and insulation layer. The decoupler is a soft felt manufactured from urethane foam or octalobal cross-section fiber, and the sound absorption and insulation layer includes a compressed felt manufactured from octalobal cross-section fibers. In particular, the shape factor (&#x3b1;) of the octalobal cross-section fiber is 2.0 to 2.7. Particularly, the multilayer dash isolation pad according to the present invention does not decrease thickness or be contracted upon press molding after pre-heating felt, such that superior formability in components can be obtained and a sound absorption coefficient may be enhanced without increase in the weights and thicknesses of the decoupler and the sound absorption and insulation layer.

Multilayer dash isolation pad having superior formability and sound absorption performance

Growing community of inventors

Ulsan, South Korea

Kil Bu Joo